Information mapping method, information acquisition method, terminal device and network device

Abstract

Provided are an information mapping method, an information acquisition method, a terminal device, and a network device. The information mapping method includes mapping at least one information domain of channel state information to at least one field of uplink control information, dividing the at least one field into a first partial field and a second partial field, generating a first bit sequence based on the first partial field, and generating a second bit sequence based on the second partial field.

What is claimed is: 
     
       1. A method for wireless communication, comprising:
 receiving, by a terminal device, one or more reference signals from a base station; 
 determining, by the terminal device, channel state information by measuring the one or more reference signals; 
 generating, by the terminal device, a first bit sequence of uplink control information based on a first partial field of the channel state information, the first partial field carrying an indicator indicating a number of coefficients in a first matrix, wherein the first matrix is determined based on L vectors and M vectors; and 
 generating, by the terminal device, a second bit sequence of the uplink control information based on a second partial field of the channel state information, the second partial field carrying information that comprises (1) information indicating a bitmap that identifies positions of the coefficients in the first matrix, (2) information identifying a strongest coefficient in the first matrix, and (3) information indicating an amplitude and a phase of the coefficients in the first matrix, 
 wherein a first field of the second bit sequence that corresponds to the information identifying the strongest coefficient in the first matrix is positioned immediately before a second field of the second bit sequence that corresponds to the information indicating the amplitude and the phase of the coefficients, wherein, in the second field, information of the amplitude of the coefficients is followed by information of the phase of the coefficients; and 
 transmitting the uplink control information comprising the first bit sequence and the second bit sequence to the base station. 
 
     
     
       2. The method of  claim 1 , wherein generating the second bit sequence based on the second partial field comprises:
 generating a field of the second bit sequence that corresponds to the information indicating the amplitude and the phase of the coefficients in the first matrix based on an order indicated by the information indicating the bitmap that identifies positions of the coefficients in the first matrix. 
 
     
     
       3. The method of  claim 1 , wherein the first partial field further carries a rank indicator, a wideband channel quality indicator for a first transport block, and a subband differential channel quality indicator of the first transport block. 
     
     
       4. The method of  claim 1 , wherein the first bit sequence is generated by mapping the first partial field of the channel state information to the first bit sequence, and wherein the second bit sequence is generated by mapping the second partial field of the channel state information to the second bit sequence. 
     
     
       5. The method of  claim 4 , wherein mapping the second partial field of the channel state information to the second bit sequence of the uplink control information comprises:
 mapping the information identifying the strongest coefficient in the first matrix to a sequence consisting of N bits, wherein N is an integer and is related to a maximum number of coefficients in the first matrix. 
 
     
     
       6. A method for wireless communication, comprising:
 transmitting, by a base station, one or more reference signals to a terminal device to enable the terminal device to determine channel state information by measuring the one or more reference signals; 
 receiving, by the base station, uplink control information from the terminal device, the uplink control information comprising a first bit sequence and a second bit sequence, 
 wherein a first partial field of the channel state information is mapped to the first bit sequence, the first partial field carrying an indicator indicating a number of coefficients in a first matrix, wherein the first matrix is determined based on L vectors and M vectors, and 
 wherein a second partial field of the channel state information is mapped to the second bit sequence, the second partial field carrying information that comprises (1) information indicating a bitmap that identifies positions of the coefficients in the first matrix, (2) information identifying a strongest coefficient in the first matrix, and (3) information indicating an amplitude and a phase of the coefficients in the first matrix, and wherein a first field of the second bit sequence that corresponds to the information identifying the strongest coefficient in the first matrix is positioned immediately before a second field of the second bit sequence that corresponds to the information indicating the amplitude and the phase of the coefficients, wherein, in the second field, information of the amplitude of the coefficients is followed by information of the phase of the coefficients. 
 
     
     
       7. The method of  claim 6 , wherein the information identifying the strongest coefficient in the first matrix is mapped to a sequence consisting of N bits, wherein N is an integer and is related to a maximum number of coefficients in the first matrix. 
     
     
       8. The method of  claim 6 , wherein a field of the second bit sequence that corresponds to the information indicating the amplitude and the phase of the coefficients in the first matrix is generated based on an order indicated by the information indicating the bitmap that identifies positions of the coefficients in the first matrix. 
     
     
       9. The method of  claim 6 , wherein the first partial field further carries a rank indicator, a wideband channel quality indicator for a first transport block, and a subband differential channel quality indicator of the first transport block. 
     
     
       10. A terminal device, comprising at least one processor that is configured to cause the terminal device to:
 receive one or more reference signals from a base station; 
 determine channel state information by measuring the one or more reference signals; 
 generate a first bit sequence of uplink control information based on a first partial field of the channel state information, the first partial field carrying an indicator indicating a number of coefficients in a first matrix, wherein the first matrix is determined based on L vectors and M vectors; 
 generate a second bit sequence of the uplink control information based on a second partial field of the channel state information, the second partial field carrying information that comprises (1) information indicating a bitmap that identifies positions of the coefficients in the first matrix, (2) information identifying a strongest coefficient in the first matrix, and (3) information indicating an amplitude and a phase of the coefficients in the first matrix, 
 wherein a first field of the second bit sequence that corresponds to the information identifying the strongest coefficient in the first matrix is positioned immediately before a second field of the second bit sequence that corresponds to the information indicating the amplitude and the phase of the coefficients, wherein, in the second field, information of the amplitude of the coefficients is followed by information of the phase of the coefficients; and 
 transmit the uplink control information comprising the first bit sequence and the second bit sequence to a base station. 
 
     
     
       11. The terminal device according to  claim 10 , wherein the at least one processor is configured to generate the second bit sequence by:
 generating a field of the second bit sequence that corresponds to the information indicating the amplitude and the phase of the coefficients in the first matrix based on an order indicated by the information indicating the bitmap that identifies positions of the coefficients in the first matrix. 
 
     
     
       12. The terminal device of  claim 10 , wherein the first partial field further carries a rank indicator, a wideband channel quality indicator for a first transport block, and a subband differential channel quality indicator of the first transport block. 
     
     
       13. The terminal device of  claim 10 , wherein the at least one processor is configured to cause the terminal device to generate the first bit sequence by mapping the first partial field of the channel state information to the first bit sequence, and wherein the at least one processor is configured to cause the terminal device to generate the second bit sequence by mapping the second partial field of the channel state information to the second bit sequence. 
     
     
       14. The terminal device of  claim 13 , wherein the at least one processor is configured to map the second partial field of the channel state information to the second bit sequence of the uplink control information by:
 mapping the information identifying the strongest coefficient in the first matrix to a sequence consisting of N bits, wherein N is an integer and is related to a maximum number of coefficients in the first matrix. 
 
     
     
       15. A network device, comprising at least one processor that is configured to cause the network device to:
 transmit one or more reference signals to a terminal device to enable the terminal device to determine channel state information by measuring the one or more reference signals; 
 acquire, from the terminal device, uplink control information comprising a first bit sequence and a second bit sequence, 
 wherein a first partial field of the channel state information is mapped to the first bit sequence, the first partial field carrying an indicator indicating a number of coefficients in a first matrix, wherein the first matrix is determined based on L vectors and M vectors, and 
 wherein a second partial field of the channel state information is mapped to the second bit sequence, the second partial field carrying information that comprises (1) information indicating a bitmap that identifies positions of the coefficients in the first matrix, (2) information identifying a strongest coefficient in the first matrix, and (3) information indicating an amplitude and a phase of the coefficients in the first matrix, and wherein a first field of the second bit sequence that corresponds to the information identifying the strongest coefficient in the first matrix is positioned immediately before a second field of the second bit sequence that corresponds to the information indicating the amplitude and the phase of the coefficients, wherein, in the second field, information of the amplitude of the coefficients is followed by information of the phase of the coefficients. 
 
     
     
       16. The network device of  claim 15 , wherein the information identifying the strongest coefficient in the first matrix is mapped to a sequence consisting of N bits, wherein N is an integer and is related to a maximum number of coefficients in the first matrix. 
     
     
       17. The network device of  claim 15 , wherein a field of the second bit sequence that corresponds to the information indicating the amplitude and the phase of the coefficients in the first matrix is generated based on an order indicated by the information indicating the bitmap that identifies positions of the coefficients in the first matrix. 
     
     
       18. The network device of  claim 15 , wherein the first partial field further carries a rank indicator, a wideband channel quality indicator for a first transport block, and a subband differential channel quality indicator of the first transport block.